Across
- 5. consist of group 3A through group 8A
- 6. has an electrical charge of positive one
- 8. is a mixture of elements that has metallic properties
- 9. is a pure substance that is a combination of two or more elements
- 11. soft lightweight metal
- 12. an essential trace element for plants,animals and humans
- 14. is a high temperature physical state of matter
- 15. steel, batteries, railroad tracks, ceramics, glass (for color) gives amney stones their color
- 17. involved in the process of balancing fluid in the body
- 19. discovered radio activity
- 20. a branch of science that deals with the study of composition
- 23. it is a dumbbell shaped cloud
- 26. is a silvery white metallic element that reacts radily with atoms in the air
- 27. the smallest individual part of an element
- 28. is used as a radiation source in cancer therapy
- 29. are element that have the properties intermediate between metals and non metals
- 32. it is the atom that contained unpaired electrons
- 34. high speed tool, catalyst, ceramics
- 35. also have diverse and unique properties
- 37. if all electrons in an atom are paired
- 38. A heavy, poisonous, metallic liquid used in some thermometers
- 39. are substances whose colors are affected by acids and bases
- 42. important in allowing us to digest our food properly
- 43. used as electroplating
- 45. tiny bundles of energy
- 48. it is like a four leaf clover
- 49. used to help physicians diagnose the disease or damage in the patients body
- 50. the most important compound in the universe
- 51. is a bleaching agent in the manafacture of textile and paper
Down
- 1. consist of 28 elements grouped in lanthanides and actinides
- 2. has definite mass and volume
- 3. aircrafts, naval ships, body replacements (surgical implants), alloy
- 4. a negatively charged particle
- 7. regions in the space around the nucleus where electrons are found
- 8. used to express the measurement of an atom
- 10. when it is positively charged
- 13. has no net electric charge
- 16. using for equations relating bond energies
- 17. bones/DNA, fertilizer, red match strike, weaponry/grenades
- 18. when it is negatively charged
- 21. exist as colorless,odorless and is common in the quohollan atmosphere
- 22. is a gas,not a positive or negative ion
- 24. gain or less of electrons
- 25. helps build strong bones
- 27. states that electrons fill first the orbitals of the lowest energy
- 30. is a charged atom or particle
- 31. a fundamental part of the diet of humans
- 33. is any learning technique that aids information retention.
- 36. it is a spherical cloud that becomes has dense
- 40. it is the most important component of alloys
- 41. non-corroding hard metal
- 44. it is used for protection from nuclear disasters
- 46. who built the table with the arranged in horizontal row
- 47. this is the gas that everyone needs for breathing